PrintPreview: [LINUX] Update the margin values after flipping the paper orientation.

printing/page_setup_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "printing/page_setup.h"
 
 #include <stdlib.h>
 #include <time.h>
 
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 172 matching lines @@
   EXPECT_EQ(setup.effective_margins().top, 2);
   EXPECT_EQ(setup.effective_margins().right, 3);
   EXPECT_EQ(setup.effective_margins().bottom, 4);
 
   setup.ForceRequestedMargins(margins);
   EXPECT_EQ(setup.effective_margins().left, 0);
   EXPECT_EQ(setup.effective_margins().top, 0);
   EXPECT_EQ(setup.effective_margins().right, 0);
   EXPECT_EQ(setup.effective_margins().bottom, 0);
 }
+
+TEST(PageSetupTest, FlipOrientation) {
+  // Margins.
+  printing::PageMargins margins;
+  margins.header = 2;
+  margins.footer = 3;
+  margins.left = 4;
+  margins.top = 14;
+  margins.right = 6;
+  margins.bottom = 7;
+  int kTextHeight = 5;
+
+  // Page description.
+  gfx::Size page_size(100, 70);
+  gfx::Rect printable_area(8, 9, 92, 50);
+
+  // Make the calculations.
+  printing::PageSetup setup;
+  setup.SetRequestedMargins(margins);
+  setup.Init(page_size, printable_area, kTextHeight);
+
+  gfx::Rect overlay_area(8, 9, 86, 50);
+  gfx::Rect content_area(8, 14, 86, 40);
+
+  EXPECT_EQ(page_size, setup.physical_size());
+  EXPECT_EQ(overlay_area, setup.overlay_area());
+  EXPECT_EQ(content_area, setup.content_area());
+
+  EXPECT_EQ(setup.effective_margins().left, 8);
+  EXPECT_EQ(setup.effective_margins().top, 14);
+  EXPECT_EQ(setup.effective_margins().right, 6);
+  EXPECT_EQ(setup.effective_margins().bottom, 16);
+
+  // Flip the orientation
+  setup.FlipOrientation();
+
+  // Expected values.
+  gfx::Size flipped_page_size(70, 100);
+  gfx::Rect flipped_printable_area(9, 0, 50, 92);
+  gfx::Rect flipped_overlay_area(14, 2, 45, 90);
+  gfx::Rect flipped_content_area(14, 7, 45, 80);
+
+  // Test values.
+  EXPECT_EQ(flipped_page_size, setup.physical_size());
+  EXPECT_EQ(flipped_overlay_area, setup.overlay_area()) << " " <<
+      flipped_page_size.ToString() << " " << flipped_printable_area.ToString();
+  EXPECT_EQ(flipped_content_area, setup.content_area()) << " " <<
+      flipped_page_size.ToString() << " " << flipped_printable_area.ToString();
+  EXPECT_EQ(flipped_printable_area, setup.printable_area());
+
+  // Margin values are updated as per the flipped values.
+  EXPECT_EQ(setup.effective_margins().left, 14);
+  EXPECT_EQ(setup.effective_margins().top, 7);
+  EXPECT_EQ(setup.effective_margins().right, 11);
+  EXPECT_EQ(setup.effective_margins().bottom, 13);
+
+  // Force requested margins and flip the orientation.
+  setup.Init(page_size, printable_area, kTextHeight);
+  setup.ForceRequestedMargins(margins);
+  EXPECT_EQ(setup.effective_margins().left, 4);
+  EXPECT_EQ(setup.effective_margins().top, 14);
+  EXPECT_EQ(setup.effective_margins().right, 6);
+  EXPECT_EQ(setup.effective_margins().bottom, 7);
+
+  // Flip the orientation
+  setup.FlipOrientation();
+
+  // Expected values.
+  gfx::Rect new_printable_area(9, 0, 50, 92);
+  gfx::Rect new_overlay_area(14, 2, 49, 95);
+  gfx::Rect new_content_area(14, 6, 49, 90);
+
+  // Test values.
+  EXPECT_EQ(flipped_page_size, setup.physical_size());
+  EXPECT_EQ(new_overlay_area, setup.overlay_area());
+  EXPECT_EQ(new_content_area, setup.content_area());
+  EXPECT_EQ(new_printable_area, setup.printable_area());
+
+  // Margins values are changed respectively.
+  EXPECT_EQ(setup.effective_margins().left,14);
+  EXPECT_EQ(setup.effective_margins().top, 6);
+  EXPECT_EQ(setup.effective_margins().right, 7);
+  EXPECT_EQ(setup.effective_margins().bottom, 4);
+}